Respuesta :
Since the common ratio between the number of books in consecutive shelf's is always the same, this sequence is a geometric sequence.
In a geometric sequence, the quotient between consecutive terms is always the same, called common ratio.
In this problem, the terms of the sequence are: {2, 8, 32, 128}.
Hence, the quotients between consecutive terms are:
[tex]\frac{128}{32} = 4[/tex]
[tex]\frac{32}{8} = 4[/tex]
[tex]\frac{8}{2} = 4[/tex]
Always the same, hence, a geometric sequence.
A similar problem is given at https://brainly.com/question/24138365